Mixer



E. W. DILG March 6, 1962 MIXER 4 Sheets-Sheet 1 Filed Oct. 28, 1959 INVENTOR. EARL WlLLlAM D ILG ATTORNEY March 6, 1962 Filed Oct. 28, 1959 E. W. DILG MIXER 4 Sheets-Sheet 2 ATTORNEY E. W. DILG March 6, 1962 MIXER 4 Sheets-Sheet 3 Filed Oct. 28, 1959 INVENTOR.' EARL WILLIAM DILG Oh W ATTORNEY March 6, 1962 E. w. DILG 3,023,580

MIXER Filed Oct. 28, 1959 4 Sheets-Sheet 4 INVENTOR. EARL WILLIAM DILG ATTORNEY I United States Patent 3,023,580 MIXER Earl William Dilg, Dayton, Ohio, assignor to Max Isaacson, Dayton, Ohio Filed Oct. 28, 1959, Ser. No. 849,338 2 Claims. (Cl. 60-52) This invention relates to a mixer, and is more particularly concerned with a mixer operated by hydraulic motors.

An object of the invention is to provide a mixer for mixing various types of fluids and semi-fluids, which is of simple construction, readily operable, and easily adjustable. Another object of the invention is to provide in a hydraulically operated mixer, an improved hydraulic system. These and other advantages will become more readily apparent, upon a reading of the description following hereinafter and upon an examination of the drawings, in which:

FIGURE 1 is a side view of the hydraulically operated mixer of the invention,

FIGURE 2 is a top view of the mixer of FIGURE 1,

FIGURE 3 is a cross-sectional view taken along line 3-3 of FIGURE 2,

FIGURE 4 is a cross-sectional view taken along line 44 of FIGURE 3,

FIGURE 5 is a cross-sectional view taken along line 55 of FIGURE 1,

FIGURE 6 is a side view, partially in cross-section, of the pump and motor mounting,

FIGURE 7 is an expanded perspective view of the control panel manifold of the invention,

FIGURE 8 is a perspective view of the control panel manifold of the invention when assembled, and

FIGURE 9 is a schematic view of the hydraulic system of the invention.

As shown in FIGURE 1 and more clearly shown in FIGURE 6, the mixer of the invention comprises a motive power source 1 which consists of an electric motor 2 drivingly mounted to operate a hydraulic pump 4. The electric motor 2 is mounted upon a mounting bracket comprising standards 6, 6 and flanges 8 and 10. The flange 8 is bolted to the motor 2 and the flange 10 is bolted to the cover 12 of a tank 14. The motor 2 drives the pump 4 through a locked coupling 7.

The tank 14 is compartmented by means of baflle plates into an oil compartment 16 and a coolant (preferably water) compartment 18. Alternatively the coolant can be circulated through coils immersed in the oil tank 14. The oil level is indicated by gauge 20 and the oil temperature is indicated by gauge 22. The coolant means is admitted through inlet conduit 24 and withdrawn out of tank 14 via outlet 26. Appropriate drains 28 and 30 are located on the underneath of the tank 14 to drain the compartments 16 and 18, respectively.

Pump 4 operates to draw oil via conduit 32 from the oil sump 16 through pump 4 and through conduit 36 to the manifold, described hereinafter. A drain 34 is provided from the pump 4 leading to the sump and drain plug 28.

Reference is now made to FIGURES 7 and 8. The control panel 38 which is mounted upon the tank 14 is provided with a series of drilled passages having a series of plugs 41 closing off the ends of selected bores so as to provide conduits as hereinafter described. Referring also to FIGURE 9, it is seen that the motor 2 drives pump 4 to withdraw oil from sump 16 via conduit 32. The pump 4- transmits oil through conduit 36 to the distributing manifold 38. The various conduits shown in FIG- URE 9 are formed by drilled passages in the manifold as shown in FIGURES 7 and 8. The outlet 36 from pump 4 to the manifold 38 is distributed via conduit 44 to a pressure relief valve 40. The front of the manifold 38 is indicated in FIGURE 7 as being provided with a series of mounting holes 43 to permit the mounting thereto of the pressure relief or regulating valve 40. A satisfactory valve for this purpose would, for example, be one manufactured by the Dennison Manufacturing Co., and designated as relief valve model O63133A. This valve controls the pressure of the oil transmitted to the hydraulic motor 100, described hereinafter. A drain conduit 42 leading from the pressure relief valve 40 extends down to the sump 16. A guage 67 may be inserted within the conduit 65 communicating with conduit 44 to measure the inlet pressure to the pressure relief valve.

The outlet conduit 36 from the pump 4 also supplies fluid through conduit 54 to a 4-way valve 60 which controls the flow of fluid to the lift cylinder 70. Fluid also flows through conduit 46 to a flow control valve 50 which regulates the speed of hydraulic motor by transmitting fluid through conduit 52. The output of the pressure regulator valve 40 is fed through conduit 82 through the manifold 38 to hydraulic motor 100.

The 4-way control valve 60 is provided with four conduits 54, 58, 72 and 74. When in the position shown in FIGURE 9, flow from pump 4 is transmitted via conduits 36, '46, 54, past the flow restriction valve or metering orifice 56 and through connecting conduit 58 to the upper part of the lift cylinder 70. The cylinder will then be caused to lower and thereby force the fluid entrapped below the piston within that cylinder out the bottom of the cylinder and through conduit 72 to the flow control valve 60. Conduit 72 in the position of the valve 60 shown in FIGURE 9, is interconnected with conduit 74 so that the fluid flowing out of the lift cylinder is transmitted via conduit 74 back to the sump 16. As shown by the dotted lines in FIGURE 9, when it is desired to lift the cylinder 70 the valve is positioned into the position shown by the dotted lines so that conduits 54 and 72 are interconnected to transmit fluid from pump 4 to the lower part of the cylinder 70 and thereby raise the piston to force fluid out of the upper part of cylinder 70 through conduit 58, and to the then interconnecting conduit 74 to the sump 16. Thus, by simple manipulation of the handle 61 the flow control valve 60 can be positioned either to transmit fluid from pump 4 to raise or lower lift cylinder 70. Alternatively, a motor actuated automatic control can be substituted for the manually operable handle 61. As indicated in FIGURE 7, the 4-way valve 60 is mounted on the front of manifold 38 by a series of mounting holes 45.

The lift cylinder 70 is more clearly shown in FIGURE 3. Mounted upon the cover plate 12 of the tank 14 is an external column 102. This column 102 is fixedly mounted to the tank cover and its inner surface serves as a bearing surface for an internal column 104 which is mounted fixedly at its upper end to a top housing 106. The mating surfaces of the columns 102 and 104 are preferably polished to provide for easy sliding. Mounted within the telescopic cylinders 102, 104 is the lift cylinder 70 which consists of an outer cylinder 108 fixedly mounted upon the lid 12 of tank 14, within which slides an inner piston 110 appropriately fitted with a plunger 112. The piston is hollow and in turn slides upon a guide tube 109. As shown in FIGURE 3, fluid is transmitted to the under side of the plunger 112 via conduit 72 and is transmitted to the upper side of the plunger 112 via conduit 58 as explained heretofore. The inner shaft 110 is hollow and is mounted to slide upon the guide tube 109 which forms the conduit 52 leading to the hydraulic motor 100. The tube 109 and piston 110 are also preferably polished on their mating surfaces.

As indicated above, the tubular member 110 is appropriately affixed by a fastening means 121 to a top housing 106. This top housing may be positioned in either of three positions, two of which are shown inphantom form in FIGURE 2. The positioning of this top housing 106 is accomplished as shown in FIGURES l and by means of-a springloaded detent which engages inaseries of holes 122 in the internal cylinder column 104. The operation of such device is believed readily apparent from an examination of these figures. i

The top housing comprises a lower shroud 124 and a top cover 126 which are arranged. for ready disengagement when it is desired to service the motor. 100. The shroud 124 is provided with a shelf 123 to which the internal column 104 is aflixed and also to which the plunger 110 is affixed. Mounted at one end of the shelf 123 is the hydraulic motor 100. This motorv serves to rotate a shrouded turbine 130to performthe mixing.

Fluid to drive the hydraulic motor 100 flows in from conduit 52 and out through conduit to the sump 16. The motor 16.0, through an appropriate, coupling 132, drives the drive shaft 134. which is journalled at 136. and 138. Coupling 132 preferably runs in an oil bath as shown.

In operating the mixer, when the pump 4 is actuatedby motor 2, fluid is tran'smitted through conduit 36 to the manifold 38 and by manipulation of the 4-way control valve 60 the lift cylinder 71) can be raised or lowered to position the shrouded turbine 130into any desired position in the tank to commence mixing of the material to be mixed. The position of the shroudedtilrbine 130 is thus adjusted to that desired and the hydraulic motor 100 is actuated at a speed controlled by the setting of the motor speed control valve 50. i

As thus described, by the use of a simple hydraulic syste m,a,high' speed -mixer is obtained which is particularly adapted for mixing white ware, glazefan'd porcelain enamel. The hydraulic motor drive has infinite speed range, from zero to its, maximum, and eliminatesj belting or gearing. By the controli'manifold panel oi the invention, only two operating co ntrol sare necessaryi one for turbine shaft speedand one for up, down or neutral positions. While, only a specific modification. of the mixerof the invention has been described, it will become readily apparent to those skilled in the art, that various modifieation'sfmay. be made without departing from. the.

scope and spirit of the invention.

What! claim is':' i i 1. A mixer, comprising in, combination: a motive powersourc'e including a motor and pump, a fluid reservoir, a unitary flowcontrolmanifold, ajfirstfluid motor.

means for rotating an element, a second fluid motor means for raising and lowering said element, a first and a second valvemeans' arranged tornQnitor-flow to said first and second motor means respectively; said manifold comprising a plate member having a series of bores therein a plurality of which are interconnecting, conduit means including said manifold bores interconnecting said pump to said reservoir and interconnecting said first and second fluid motor means in parallel fluid circuit, said second fluid motor means comprising three concentrically arranged telescopic pairs of tubular members, one tubular member being common to two of said pairs of tubular members, said one tubular member being formed as a piston and arranged to be raised and lowered by said hydraulic fluid, said one tubular member being further mounted to integrally raise and lower said first fluid motor and element, said second valve means being position ble into a first operative position to interconnect selected bores for transmitting fluid to said second fluid motor so as to raisesaid element and into a second operative position to interconnect the saidselected bores in a diiferent communicative, combination for transmitting fluidto said second fluid motor so as to lower said element, a flow restricting orifice means interposed between said pump and said; second valve means and a pressure relief valve .means interposed. in said conduit means between the first motor meansand theoutflow of said first valve means to control the fluid pressure transmitted to said first motor m ns I 2. The mixer of claim 1 wherein said conduit means comprises a m-ainconduit leading from said pump to said first motor means and first. and second branch conduits leading from said main conduit prior to said first motor means, said pressure relief valve means being located in said first branch conduit, said second valve meansgand flow restricting means being located in said second branch conduit and the innermost telescopic pair of tubular. members consisting of said piston member and an inner tubular member forming a portion of saidconduit for conducting fluid from said pump to said first fluid motor means.

References Citedin the file of this patent UNITED STATES PATENTS 1,294,266 Hogg Feb. 11, 1919 1,320,845 Dayton et al Nov. 4 1919 1,911,132 Macomber May23, 1933 2,042,186 Peterson May 26, 1936 2,292,278 Lorenz Aug. 4, 1942 2,481,731 Dubin Sept. 13, 1949 2,511,184 Walling June 13, 1950 2,568,528 Welte Sept. 18, 1951 2,635,586 Kuhn Apr. 21, 1953 2,665,122 Rowland Jan. 5, 1954 2,706,623 Styes Apr. 19, 1955 2,860,487 Wheeler Nov. 18, 1958 2,881,589 Hi'tt et al. Apr. 14, 1959 2,896,677 Payzant July 28, 1959 

